October, 2007 - Had to replace circuit board - Thermal fuse OK. Washer runs OK
Novemebr, 2007 - Had to replace pump/motor asm. One motor winding shorted, lowering coil resistance but did not open winding to infinite resistance. Tough to diagnose. Thermal fuse (original) still OK. Washer runs OK
January, 2008 - Had to replace thermal fuse. Your advice at that time was to check running current. I don’t have an AC ammeter, but since the motor was new, I assumed it’s current draw would be OK. Washer runs OK
July, 2008 - thermal fuse blew again. When replaced, washer runs OK.
Now my question(?) - Basically, what’s going on here? More specifically, what can I do to prevent future blown (or is it overheated) fuses? I realize I should check the AC current, but what can I do if it is too high?
Very interesting - The day before the washer stopped (in mid cycle), I had a Square D SDSA1175 Whole House Surge Protector installed at the box where the power comes into my house. We have had numerous electronic failures here due to power surges/lightening/etc (we live in the boonies) The day the washer died we had an very severe electrical storm, however, the Sqaure D thing did not activate. Anyway, its General Specifications are:
Product Catalog No. SDSA1175
Max Surge Current 36 kA/Phase
Housing Rating Type 4X
Product Weight .525 lb
Connection Method Parallel, #14 AWG Stranded Wire
Thermal Fusing Yes
Operating Temperature -40° to +160°F (-40° to +70°C)
Operating Frequency 50/60 Hz
Diagnostics Green Status LED
Product Standards UL 1449-2nd Ed, cUL, ANSI/IEEE C62.11
Surge Arrester/TVSS
I wondred if an additional surge protector on the washer would help. Really appreciate the suggestion, and I would also appreciate your opinion about the whole situation.
Thx again
Dave